Gulu la Free electron Laser la Chinese Academy of Sciences lapita patsogolo pa kafukufuku wa ma elekitironi aulere ogwirizana kwambiri. Kutengera Shanghai Soft X-ray Free Electron Laser Facility, makina atsopano a echo harmonic cascade free electron laser omwe akufunsidwa ndi China atsimikiziridwa bwino, ndipo ma radiation ofewa a X-ray omwe amagwira ntchito bwino kwambiri apezeka. Posachedwapa, Zotsatirazi zidasindikizidwa mu Optica pansi pa mutu wakuti Coherent and Ultra-short soft X-ray pulses kuchokera ku ma echo-enabled harmonic cascade free electron lasers.
X-ray yaulere ya electron laser ndi imodzi mwazinthu zowunikira kwambiri padziko lapansi. Pakadali pano, ma lasers ambiri amtundu wa X-ray aulere amatengera makina odzikulitsa okha okha (SASE), SASE ili ndi kuwala kwapamwamba kwambiri komanso femto level Ultra-short pulse wide ndi magwiridwe antchito ena abwino kwambiri, koma SASE vibration. ndi phokoso, kugwirizana ndi kukhazikika kwa ma radiation ake kugunda si mkulu, si X-ray gulu "laser". Chimodzi mwamagawo ofunikira kwambiri pakukula kwa laser electron yapadziko lonse lapansi ndikupanga ma radiation ogwirizana a X-ray okhala ndi mtundu wa laser wamba, ndipo njira yofunika ndiyo kugwiritsa ntchito makina opangira ma elekitironi opanda mbewu. The poizoniyu wa kunja mbewu free elekitironi laser cholowa makhalidwe a laser mbewu, ndipo ali ndi makhalidwe abwino monga kugwirizana kwathunthu, kulamulira gawo ndi kalunzanitsidwe yeniyeni ndi laser mpope kunja. Komabe, chifukwa cha kuchepa kwa kutalika kwa mafunde ndi kugunda kwamphamvu kwa laser ya mbewu, kuphimba kwakutali kwa mafunde ndi kusintha kwa ma pulse akunja kwa ma elekitironi opanda mbewu ndi ochepa. Pofuna kukulitsa kufalikira kwakufupi kwa kutalika kwa ma elekitironi akunja, njira zatsopano zogwiritsira ntchito ma elekitironi aulere monga echo harmonic generation zikupangidwa mwamphamvu padziko lapansi m'zaka zaposachedwa.
Laser yaulere ya ma elekitironi yakunja ndi imodzi mwanjira zazikulu zopangira ma elekitironi aulere ku China. Pakadali pano, zida zonse zinayi zopindula zaulere za ma elekitironi a laser ku China zatengera mawonekedwe akunja opangira mbewu. Kutengera Shanghai Deep Ultraviolet Free electron Laser Facility ndi Shanghai Soft X-ray Free Electron Laser Facility, asayansi akwaniritsa motsatizana njira yoyamba yapadziko lonse lapansi yokulitsa kuwala kwa ma elekitironi amtundu wa echo komanso mtundu woyamba wokulirapo wa ultraviolet echo mtundu wa free electron laser saturation amplification. Pofuna kupititsa patsogolo laser ya ma elekitironi yaulere ya njere mpaka kutalika kwake kwakanthawi, gulu lofufuza palokha lidaganiza zopanga njira yatsopano yolumikizira ma elekitironi yaulere yokhala ndi echo harmonic cascade, yomwe idatengedwa ndi chipangizo cha Shanghai Soft X-ray Free electron Laser. chiwembu choyambira, ndikumaliza ntchito yonseyo kuyambira pakutsimikizira mfundo mpaka kukulitsa kuwala mu bandi yofewa ya X-ray. Zotsatira zafukufuku zikuwonetsa kuti poyerekeza ndi njira yoyendetsera mbewu yakunja, makinawa ali ndi mawonekedwe owoneka bwino kwambiri, potengera ofufuza odziyimira pawokha aukadaulo wa ultrafast X-ray pulse diagnosis (https://doi.org/10.1016 /j.fmre.2022.01.027), Kuchita bwino kwambiri kwa makina atsopanowa pakuwongolera kutalika kwa kugunda komanso kutulutsa kwamphamvu kwambiri kumatsimikiziridwa. Zotsatira za kafukufuku wofunikira zimapereka njira yotheka yaukadaulo yopangira ma laser ma elekitironi aulere ogwirizana mu band ya subnanometer, ndipo ipereka chida choyenera chofufuzira m'magawo a X-ray nonlinear Optics ndi ultrafast physical chemistry.
Echo harmonic cascade free elekitironi laser imakhala ndi mawonekedwe abwino kwambiri: chithunzi chakumanzere ndi njira yanthawi zonse, ndipo chithunzi choyenera ndi echo harmonic cascade mode.
Kusintha kwa kutalika kwa X-ray komanso kutulutsa kwamphamvu kwambiri kumatha kuzindikirika ndi echo harmonic cascade.
Nthawi yotumiza: Oct-08-2023